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<div id="main_div" class="container" style="padding-left: 25px; padding-right: 25px">
	<h2> 提交记录 3395 </h2>
	<hr />
	
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					<th class="col-xs-2"> 用户 </th>
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					<th class="col-xs-1"> 用时 </th>
					<th class="col-xs-1"> 内存 </th>
					<th class="col-xs-1"> 语言 </th>
					<th class="col-xs-1"> 代码长度 </th>
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					<td style='font-size:13px'> <a href='/user/profile/wys/index.html'> wys </a> </td>
<td> <a href='/problem/1002i/index.html'> 1002i. 【模板题】多项式乘法 </a> </td>
<td> Accepted </td>
<td> 100 </td>
<td style='font-size:13px'> 30.198 ms </td>
<td style='font-size:13px'> 5 MB + 800 KB </td>
<td style='font-size:13px'> C++ </td>
<td style='font-size:13px'> 5.08 KB </td>
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					<th class="col-xs-6"> 提交时间 </th>
					<th class="col-xs-6"> 评测时间 </th>
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					<td style='font-size:13px'> 2018-07-14 18:49:24 </td>
<td style='font-size:13px'> 2019-01-18 23:03:42 </td>
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				<label for="code"> 代码 </label>
				<pre style="background-color:white"><code class="cpp">// http://uoj.ac/submission/206573

#include &lt;stdio.h&gt;
#include &lt;string.h&gt;
#include &lt;math.h&gt;

#define debug(...) fprintf(stderr, __VA_ARGS__)

#define PI 3.14159265358979323846

template &lt;class T&gt;
inline void swap(T &amp;a, T &amp;b) {
	T t = a;
	a = b, b = t;
}

namespace IO {
	const int BUF_SIZE = 1 &lt;&lt; 15;
	char in_buf[BUF_SIZE], out_buf[BUF_SIZE];
	char *p_in_buf = in_buf + BUF_SIZE;
	char *p_out_buf = out_buf;
	
	
	inline char get_char() {
		if (p_in_buf == in_buf + BUF_SIZE) {
			fread(in_buf, 1, BUF_SIZE, stdin), p_in_buf = in_buf;
		}
		return *(p_in_buf++);
	}
	
	inline void put_char(char x) {
		if (p_out_buf == out_buf + BUF_SIZE) {
			fwrite(out_buf, 1, BUF_SIZE, stdout), p_out_buf = out_buf;
		}
		*(p_out_buf++) = x;
	}
	
	inline void flush() {
		if (p_out_buf != out_buf) {
			fwrite(out_buf, 1, p_out_buf - out_buf, stdout);
			p_out_buf = out_buf;
		}
	}
}

#define getchar() IO::get_char()
#define putchar(x) IO::put_char(x)

inline int getint() {
	int x = 0;
	char c = getchar();
	while (c &lt;= 32) c = getchar();
	while (c &gt; 32) x = x * 10 + c - 48, c = getchar();
	return x;
}

inline int getint(char &amp;c) {
	int x = 0;
	c = getchar();
	while (c &lt;= 32) c = getchar();
	while (c &gt; 32) x = x * 10 + c - 48, c = getchar();
	return x;
}

template &lt;class T&gt;
inline void _putint(T x) {
	return x ? _putint(x / 10), putchar(48 + x % 10), void() : void();
}

template &lt;class T&gt;
inline void putint(T x) {
	return x == 0 ? putchar(&#x27;0&#x27;), void() : _putint(x), void();
}

inline void getline(char *s) {
	char c = getchar();
	while (c == &#x27;\n&#x27;) c = getchar();
	while (c != &#x27;\n&#x27;) *(s++) = c, c = getchar();
	*s = 0;
}

// ==== header ====

#define float double

struct Complex {
	float x, y;
	
	Complex conj() {
		return (Complex){x, -y};
	}
	
	Complex conj2() {
		return (Complex){-x, y};
	}
};

inline Complex operator + (const Complex &amp;a, const Complex &amp;b) {
	return (Complex){a.x + b.x, a.y + b.y};
}

inline Complex operator - (const Complex &amp;a, const Complex &amp;b) {
	return (Complex){a.x - b.x, a.y - b.y};
}

inline Complex operator * (const Complex &amp;a, const Complex &amp;b) {
	return (Complex){a.x * b.x - a.y * b.y, a.x * b.y + a.y * b.x};
}

Complex A[(1 &lt;&lt; 17) + 1], B[(1 &lt;&lt; 17) + 1];

int bitrev[1 &lt;&lt; 9];

void bitrev_init() {
	for (int i = 0; i &lt; 1 &lt;&lt; 9; i++) {
		int t = 0;
		for (int j = 0; j &lt; 9; j++) {
			t |= ((i &gt;&gt; j) &amp; 1) &lt;&lt; (8 - j);
		}
		bitrev[i] = t;
	}
}

inline int get_bitrev(int x, int len) {
	return (bitrev[x &gt;&gt; 9] | (bitrev[x &amp; ((1 &lt;&lt; 9) - 1)] &lt;&lt; 9)) &gt;&gt; (18 - len);
}

void FFT(Complex *a, int lg_n, bool rev) {
	int n = 1 &lt;&lt; lg_n;
	
	for (int i = lg_n - 1; i &gt;= 0; i--) {
		int S = 1 &lt;&lt; i;
		Complex w1 = (Complex){cos(PI / S), -sin(PI / S) * (rev ? -1 : 1)};
		for (int j = 0; j &lt; n; j += 2 * S) {
			Complex w = (Complex){1.0, 0.0};
			Complex *A = a + j;
			for (int k = 0; k &lt; S; k++) {
				Complex t = A[k + S];
				A[k + S] = (A[k] - t) * w;
				A[k] = A[k] + t;
				w = w * w1;
			}
		}
	}
	
	for (int i = 0; i &lt; n; i++) {
		int t = get_bitrev(i, lg_n);
		if (i &lt; t) {
			Complex tmp = a[i];
			a[i] = a[t], a[t] = tmp;
		}
	}
}

void FFT(Complex *a, Complex *b, int lg_n, bool rev) {
	int n = 1 &lt;&lt; lg_n;
	
	for (int i = lg_n - 1; i &gt;= 0; i--) {
		int S = 1 &lt;&lt; i;
		Complex w1 = (Complex){cos(PI / S), -sin(PI / S) * (rev ? -1 : 1)};
		for (int j = 0; j &lt; n; j += 2 * S) {
			Complex w = (Complex){1.0, 0.0};
			Complex *A = a + j, *B = b + j;
			for (int k = 0; k &lt; S; k++) {
				Complex ta = A[k + S], tb = B[k + S];
				A[k + S] = (A[k] - ta) * w;
				B[k + S] = (B[k] - tb) * w;
				A[k] = A[k] + ta;
				B[k] = B[k] + tb;
				w = w * w1;
			}
		}
	}
	
	for (int i = 0; i &lt; n; i++) {
		int t = get_bitrev(i, lg_n);
		if (i &lt; t) {
			Complex tmp = a[i];
			a[i] = a[t], a[t] = tmp;
			tmp = b[i];
			b[i] = b[t], b[t] = tmp;
		}
	}
}

char in_s[1 &lt;&lt; 18];

int main() {
	int n, m;
	n = getint(), m = getint();
	
	int lg_n = 3;
	while (1 &lt;&lt; lg_n &lt; n + 1 || 1 &lt;&lt; lg_n &lt; m + 1) ++lg_n;
	
	bitrev_init();
	
	int N = 1 &lt;&lt; lg_n;
	int N2 = N &gt;&gt; 1;
	
	getline(in_s);
	for (int i = 0; i &lt;= n; i++) {
		// *0.5 is to avoid *2 in later caclulation
		(i &amp; 1 ? A[i &gt;&gt; 1].y : A[i &gt;&gt; 1].x) = (in_s[i * 2] - 48) * 0.5;
	}
	
	getline(in_s);
	for (int i = 0; i &lt;= m; i++) {
		(i &amp; 1 ? B[i &gt;&gt; 1].y : B[i &gt;&gt; 1].x) = (in_s[i * 2] - 48) * 0.5;
	}
	
	FFT(A, B, lg_n, false);
	
	A[N] = A[0];
	B[N] = B[0];
	const Complex w = (Complex){cos(2 * PI / N), sin(2 * PI / N)};
	Complex w_product = (Complex){1, 0};
	for (int i = 0; i &lt;= N2; i++) {
		Complex a1 = A[i] + A[N - i];
		Complex a2 = A[i] - A[N - i];
		Complex b1 = B[i] + B[N - i];
		Complex b2 = B[i] - B[N - i];
		
		Complex a = (Complex){a1.x, a2.y};
		Complex b = (Complex){a2.x, a1.y};
		Complex c = (Complex){b1.x, b2.y};
		Complex d = (Complex){b2.x, b1.y};
		
		// a * c - b * d * delta(x - 1) + a * d + b * c
		// @Signal Processing
		A[i] = a * c + a * d + b * c - b * d * w_product.conj();
		A[N - i] = (a * c).conj() + a.conj() * d.conj2() + b.conj2() * c.conj() - b.conj2() * d.conj2() * w_product;
		w_product = w_product * w;
	}
	
	FFT(A, lg_n, true);
	
	float inv_n = 1.0 / N;
	for (int i = 0; i &lt;= n + m; i++) {
		putint((int)((i &amp; 1 ? A[i &gt;&gt; 1].y : A[i &gt;&gt; 1].x) * inv_n + 0.5));
		putchar(&#x27; &#x27;);
	}
	
	IO::flush();
}</code></pre>
				<br />
				
				<label for="result"> 评测结果 </label><div class="row"><div class="col-xs-12"><div class="alert alert-success"><div class="text-center row"><table class="table table-borderless" style="margin:0px"><tr><td class="col-xs-2" style="vertical-align:middle;padding-left:20px;padding-right:20px"><b>Compilation</b></td><td class="col-xs-2" style="vertical-align:middle">N/A</td><td class="col-xs-2" style="vertical-align:middle">N/A</td><td class="col-xs-2" style="vertical-align:middle">Compile OK</td><td class="col-xs-2" style="vertical-align:middle">Score: N/A</td><td class="col-xs-2" style="vertical-align:middle"><a data-toggle="collapse" href="#detail_1" aria-expanded="false" aria-controls="detail_1">显示更多</a></td></tr></table></div><div class="collapse" id="detail_1"><br /><textarea class="form-control" style="background-color: white" rows="8" readonly>Compiling...
Compile success!
</textarea></div></div><div class="alert alert-success"><div class="text-center row"><table class="table table-borderless" style="margin:0px"><tr><td class="col-xs-2" style="vertical-align:middle;padding-left:20px;padding-right:20px"><b>Subtask #1 Testcase #1</b></td><td class="col-xs-2" style="vertical-align:middle">12.58 us</td><td class="col-xs-2" style="vertical-align:middle">48 KB</td><td class="col-xs-2" style="vertical-align:middle">Accepted</td><td class="col-xs-2" style="vertical-align:middle">Score: 100</td><td class="col-xs-2" style="vertical-align:middle"><a data-toggle="collapse" href="#detail_2" aria-expanded="false" aria-controls="detail_2">显示更多</a></td></tr></table></div><div class="collapse" id="detail_2"><br /><textarea class="form-control" style="background-color: white" rows="8" readonly>verdict = Run Finished
time_ms = 0.012584
mem_kb = 48
Correct Answer
</textarea></div></div><div class="alert alert-success"><div class="text-center row"><table class="table table-borderless" style="margin:0px"><tr><td class="col-xs-2" style="vertical-align:middle;padding-left:20px;padding-right:20px"><b>Subtask #1 Testcase #2</b></td><td class="col-xs-2" style="vertical-align:middle">29.761 ms</td><td class="col-xs-2" style="vertical-align:middle">5 MB + 720 KB</td><td class="col-xs-2" style="vertical-align:middle">Accepted</td><td class="col-xs-2" style="vertical-align:middle">Score: 0</td><td class="col-xs-2" style="vertical-align:middle"><a data-toggle="collapse" href="#detail_3" aria-expanded="false" aria-controls="detail_3">显示更多</a></td></tr></table></div><div class="collapse" id="detail_3"><br /><textarea class="form-control" style="background-color: white" rows="8" readonly>verdict = Run Finished
time_ms = 29.760855
mem_kb = 5840
Correct Answer
</textarea></div></div><div class="alert alert-success"><div class="text-center row"><table class="table table-borderless" style="margin:0px"><tr><td class="col-xs-2" style="vertical-align:middle;padding-left:20px;padding-right:20px"><b>Subtask #1 Testcase #3</b></td><td class="col-xs-2" style="vertical-align:middle">23.136 ms</td><td class="col-xs-2" style="vertical-align:middle">4 MB + 572 KB</td><td class="col-xs-2" style="vertical-align:middle">Accepted</td><td class="col-xs-2" style="vertical-align:middle">Score: 0</td><td class="col-xs-2" style="vertical-align:middle"><a data-toggle="collapse" href="#detail_4" aria-expanded="false" aria-controls="detail_4">显示更多</a></td></tr></table></div><div class="collapse" id="detail_4"><br /><textarea class="form-control" style="background-color: white" rows="8" readonly>verdict = Run Finished
time_ms = 23.135698
mem_kb = 4668
Correct Answer
</textarea></div></div><div class="alert alert-success"><div class="text-center row"><table class="table table-borderless" style="margin:0px"><tr><td class="col-xs-2" style="vertical-align:middle;padding-left:20px;padding-right:20px"><b>Subtask #1 Testcase #4</b></td><td class="col-xs-2" style="vertical-align:middle">23.166 ms</td><td class="col-xs-2" style="vertical-align:middle">4 MB + 560 KB</td><td class="col-xs-2" style="vertical-align:middle">Accepted</td><td class="col-xs-2" style="vertical-align:middle">Score: 0</td><td class="col-xs-2" style="vertical-align:middle"><a data-toggle="collapse" href="#detail_5" aria-expanded="false" aria-controls="detail_5">显示更多</a></td></tr></table></div><div class="collapse" id="detail_5"><br /><textarea class="form-control" style="background-color: white" rows="8" readonly>verdict = Run Finished
time_ms = 23.165850
mem_kb = 4656
Correct Answer
</textarea></div></div><div class="alert alert-success"><div class="text-center row"><table class="table table-borderless" style="margin:0px"><tr><td class="col-xs-2" style="vertical-align:middle;padding-left:20px;padding-right:20px"><b>Subtask #1 Testcase #5</b></td><td class="col-xs-2" style="vertical-align:middle">12.29 us</td><td class="col-xs-2" style="vertical-align:middle">48 KB</td><td class="col-xs-2" style="vertical-align:middle">Accepted</td><td class="col-xs-2" style="vertical-align:middle">Score: 0</td><td class="col-xs-2" style="vertical-align:middle"><a data-toggle="collapse" href="#detail_6" aria-expanded="false" aria-controls="detail_6">显示更多</a></td></tr></table></div><div class="collapse" id="detail_6"><br /><textarea class="form-control" style="background-color: white" rows="8" readonly>verdict = Run Finished
time_ms = 0.012291
mem_kb = 48
Correct Answer
</textarea></div></div><div class="alert alert-success"><div class="text-center row"><table class="table table-borderless" style="margin:0px"><tr><td class="col-xs-2" style="vertical-align:middle;padding-left:20px;padding-right:20px"><b>Subtask #1 Testcase #6</b></td><td class="col-xs-2" style="vertical-align:middle">11.86 us</td><td class="col-xs-2" style="vertical-align:middle">48 KB</td><td class="col-xs-2" style="vertical-align:middle">Accepted</td><td class="col-xs-2" style="vertical-align:middle">Score: 0</td><td class="col-xs-2" style="vertical-align:middle"><a data-toggle="collapse" href="#detail_7" aria-expanded="false" aria-controls="detail_7">显示更多</a></td></tr></table></div><div class="collapse" id="detail_7"><br /><textarea class="form-control" style="background-color: white" rows="8" readonly>verdict = Run Finished
time_ms = 0.011860
mem_kb = 48
Correct Answer
</textarea></div></div><div class="alert alert-success"><div class="text-center row"><table class="table table-borderless" style="margin:0px"><tr><td class="col-xs-2" style="vertical-align:middle;padding-left:20px;padding-right:20px"><b>Subtask #1 Testcase #7</b></td><td class="col-xs-2" style="vertical-align:middle">11.67 us</td><td class="col-xs-2" style="vertical-align:middle">48 KB</td><td class="col-xs-2" style="vertical-align:middle">Accepted</td><td class="col-xs-2" style="vertical-align:middle">Score: 0</td><td class="col-xs-2" style="vertical-align:middle"><a data-toggle="collapse" href="#detail_8" aria-expanded="false" aria-controls="detail_8">显示更多</a></td></tr></table></div><div class="collapse" id="detail_8"><br /><textarea class="form-control" style="background-color: white" rows="8" readonly>verdict = Run Finished
time_ms = 0.011674
mem_kb = 48
Correct Answer
</textarea></div></div><div class="alert alert-success"><div class="text-center row"><table class="table table-borderless" style="margin:0px"><tr><td class="col-xs-2" style="vertical-align:middle;padding-left:20px;padding-right:20px"><b>Subtask #1 Testcase #8</b></td><td class="col-xs-2" style="vertical-align:middle">28.254 ms</td><td class="col-xs-2" style="vertical-align:middle">5 MB + 452 KB</td><td class="col-xs-2" style="vertical-align:middle">Accepted</td><td class="col-xs-2" style="vertical-align:middle">Score: 0</td><td class="col-xs-2" style="vertical-align:middle"><a data-toggle="collapse" href="#detail_9" aria-expanded="false" aria-controls="detail_9">显示更多</a></td></tr></table></div><div class="collapse" id="detail_9"><br /><textarea class="form-control" style="background-color: white" rows="8" readonly>verdict = Run Finished
time_ms = 28.253655
mem_kb = 5572
Correct Answer
</textarea></div></div><div class="alert alert-success"><div class="text-center row"><table class="table table-borderless" style="margin:0px"><tr><td class="col-xs-2" style="vertical-align:middle;padding-left:20px;padding-right:20px"><b>Subtask #1 Testcase #9</b></td><td class="col-xs-2" style="vertical-align:middle">28.26 ms</td><td class="col-xs-2" style="vertical-align:middle">5 MB + 452 KB</td><td class="col-xs-2" style="vertical-align:middle">Accepted</td><td class="col-xs-2" style="vertical-align:middle">Score: 0</td><td class="col-xs-2" style="vertical-align:middle"><a data-toggle="collapse" href="#detail_10" aria-expanded="false" aria-controls="detail_10">显示更多</a></td></tr></table></div><div class="collapse" id="detail_10"><br /><textarea class="form-control" style="background-color: white" rows="8" readonly>verdict = Run Finished
time_ms = 28.259942
mem_kb = 5572
Correct Answer
</textarea></div></div><div class="alert alert-success"><div class="text-center row"><table class="table table-borderless" style="margin:0px"><tr><td class="col-xs-2" style="vertical-align:middle;padding-left:20px;padding-right:20px"><b>Subtask #1 Testcase #10</b></td><td class="col-xs-2" style="vertical-align:middle">26.605 ms</td><td class="col-xs-2" style="vertical-align:middle">5 MB + 120 KB</td><td class="col-xs-2" style="vertical-align:middle">Accepted</td><td class="col-xs-2" style="vertical-align:middle">Score: 0</td><td class="col-xs-2" style="vertical-align:middle"><a data-toggle="collapse" href="#detail_11" aria-expanded="false" aria-controls="detail_11">显示更多</a></td></tr></table></div><div class="collapse" id="detail_11"><br /><textarea class="form-control" style="background-color: white" rows="8" readonly>verdict = Run Finished
time_ms = 26.604838
mem_kb = 5240
Correct Answer
</textarea></div></div><div class="alert alert-success"><div class="text-center row"><table class="table table-borderless" style="margin:0px"><tr><td class="col-xs-2" style="vertical-align:middle;padding-left:20px;padding-right:20px"><b>Subtask #1 Testcase #11</b></td><td class="col-xs-2" style="vertical-align:middle">30.198 ms</td><td class="col-xs-2" style="vertical-align:middle">5 MB + 800 KB</td><td class="col-xs-2" style="vertical-align:middle">Accepted</td><td class="col-xs-2" style="vertical-align:middle">Score: 0</td><td class="col-xs-2" style="vertical-align:middle"><a data-toggle="collapse" href="#detail_12" aria-expanded="false" aria-controls="detail_12">显示更多</a></td></tr></table></div><div class="collapse" id="detail_12"><br /><textarea class="form-control" style="background-color: white" rows="8" readonly>verdict = Run Finished
time_ms = 30.198145
mem_kb = 5920
Correct Answer
</textarea></div></div><div class="alert alert-success"><div class="text-center row"><table class="table table-borderless" style="margin:0px"><tr><td class="col-xs-2" style="vertical-align:middle;padding-left:20px;padding-right:20px"><b>Subtask #1 Testcase #12</b></td><td class="col-xs-2" style="vertical-align:middle">23.574 ms</td><td class="col-xs-2" style="vertical-align:middle">4 MB + 680 KB</td><td class="col-xs-2" style="vertical-align:middle">Accepted</td><td class="col-xs-2" style="vertical-align:middle">Score: 0</td><td class="col-xs-2" style="vertical-align:middle"><a data-toggle="collapse" href="#detail_13" aria-expanded="false" aria-controls="detail_13">显示更多</a></td></tr></table></div><div class="collapse" id="detail_13"><br /><textarea class="form-control" style="background-color: white" rows="8" readonly>verdict = Run Finished
time_ms = 23.573857
mem_kb = 4776
Correct Answer
</textarea></div></div><div class="alert alert-success"><div class="text-center row"><table class="table table-borderless" style="margin:0px"><tr><td class="col-xs-2" style="vertical-align:middle;padding-left:20px;padding-right:20px"><b>Subtask #1 Testcase #13</b></td><td class="col-xs-2" style="vertical-align:middle">11.62 us</td><td class="col-xs-2" style="vertical-align:middle">48 KB</td><td class="col-xs-2" style="vertical-align:middle">Accepted</td><td class="col-xs-2" style="vertical-align:middle">Score: 0</td><td class="col-xs-2" style="vertical-align:middle"><a data-toggle="collapse" href="#detail_14" aria-expanded="false" aria-controls="detail_14">显示更多</a></td></tr></table></div><div class="collapse" id="detail_14"><br /><textarea class="form-control" style="background-color: white" rows="8" readonly>verdict = Run Finished
time_ms = 0.011615
mem_kb = 48
Correct Answer
</textarea></div></div></div></div>
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